(57) The invention provides a dielectric ceramic including as the main component a complex
oxide formed of both Zr and Ti, at least one component selected from the group (A)
consisting of {Mg, Co, Zn, Ni and Mn} and at least one component selected from the
group (B) consisting of {Nb and Ta} and a TE₀₁δ -mode dielectric resonator including
the dielectric ceramic, and also the invention provides a dielectric ceramic composition
expressed by Formula (a):
wherein A denotes at least one component selected from the group (A) consisting of
{Mg, Co, Zn, Ni and Mn},
x, y and z denote molar fractions ranging from 0.10 to 0.60, 0.20 to 0.60 and 0.01
to 0.70, respectively, and have the relation represented by Formula (α):
and w denotes a value of 0 to 1.50, and a TE₀₁δ -mode dielectric resonator in which
using the dielectric ceramic.
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